{"action":"created","issue":{"url":"https://api.github.com/repos/riscv/riscv-gcc/issues/83","repository_url":"https://api.github.com/repos/riscv/riscv-gcc","labels_url":"https://api.github.com/repos/riscv/riscv-gcc/issues/83/labels{/name}","comments_url":"https://api.github.com/repos/riscv/riscv-gcc/issues/83/comments","events_url":"https://api.github.com/repos/riscv/riscv-gcc/issues/83/events","html_url":"https://github.com/riscv/riscv-gcc/issues/83","id":245634746,"number":83,"title":"redundant sign-extension in RV64","user":{"login":"aswaterman","id":1031106,"avatar_url":"https://avatars0.githubusercontent.com/u/1031106?v=4","gravatar_id":"","url":"https://api.github.com/users/aswaterman","html_url":"https://github.com/aswaterman","followers_url":"https://api.github.com/users/aswaterman/followers","following_url":"https://api.github.com/users/aswaterman/following{/other_user}","gists_url":"https://api.github.com/users/aswaterman/gists{/gist_id}","starred_url":"https://api.github.com/users/aswaterman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aswaterman/subscriptions","organizations_url":"https://api.github.com/users/aswaterman/orgs","repos_url":"https://api.github.com/users/aswaterman/repos","events_url":"https://api.github.com/users/aswaterman/events{/privacy}","received_events_url":"https://api.github.com/users/aswaterman/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"aswaterman","id":1031106,"avatar_url":"https://avatars0.githubusercontent.com/u/1031106?v=4","gravatar_id":"","url":"https://api.github.com/users/aswaterman","html_url":"https://github.com/aswaterman","followers_url":"https://api.github.com/users/aswaterman/followers","following_url":"https://api.github.com/users/aswaterman/following{/other_user}","gists_url":"https://api.github.com/users/aswaterman/gists{/gist_id}","starred_url":"https://api.github.com/users/aswaterman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aswaterman/subscriptions","organizations_url":"https://api.github.com/users/aswaterman/orgs","repos_url":"https://api.github.com/users/aswaterman/repos","events_url":"https://api.github.com/users/aswaterman/events{/privacy}","received_events_url":"https://api.github.com/users/aswaterman/received_events","type":"User","site_admin":false},"assignees":[{"login":"aswaterman","id":1031106,"avatar_url":"https://avatars0.githubusercontent.com/u/1031106?v=4","gravatar_id":"","url":"https://api.github.com/users/aswaterman","html_url":"https://github.com/aswaterman","followers_url":"https://api.github.com/users/aswaterman/followers","following_url":"https://api.github.com/users/aswaterman/following{/other_user}","gists_url":"https://api.github.com/users/aswaterman/gists{/gist_id}","starred_url":"https://api.github.com/users/aswaterman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aswaterman/subscriptions","organizations_url":"https://api.github.com/users/aswaterman/orgs","repos_url":"https://api.github.com/users/aswaterman/repos","events_url":"https://api.github.com/users/aswaterman/events{/privacy}","received_events_url":"https://api.github.com/users/aswaterman/received_events","type":"User","site_admin":false}],"milestone":null,"comments":35,"created_at":"2017-07-26T07:48:29Z","updated_at":"2017-08-28T21:43:23Z","closed_at":null,"body":"@michaeljclark to produce minimal test cases."},"comment":{"url":"https://api.github.com/repos/riscv/riscv-gcc/issues/comments/325491619","html_url":"https://github.com/riscv/riscv-gcc/issues/83#issuecomment-325491619","issue_url":"https://api.github.com/repos/riscv/riscv-gcc/issues/83","id":325491619,"user":{"login":"aswaterman","id":1031106,"avatar_url":"https://avatars0.githubusercontent.com/u/1031106?v=4","gravatar_id":"","url":"https://api.github.com/users/aswaterman","html_url":"https://github.com/aswaterman","followers_url":"https://api.github.com/users/aswaterman/followers","following_url":"https://api.github.com/users/aswaterman/following{/other_user}","gists_url":"https://api.github.com/users/aswaterman/gists{/gist_id}","starred_url":"https://api.github.com/users/aswaterman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aswaterman/subscriptions","organizations_url":"https://api.github.com/users/aswaterman/orgs","repos_url":"https://api.github.com/users/aswaterman/repos","events_url":"https://api.github.com/users/aswaterman/events{/privacy}","received_events_url":"https://api.github.com/users/aswaterman/received_events","type":"User","site_admin":false},"created_at":"2017-08-28T21:43:23Z","updated_at":"2017-08-28T21:43:23Z","body":"Yes, it's an artifact of TRULY_NOOP_TRUNCATION.  In GCC 6.1 we used a different TRULY_NOOP_TRUNCATION discipline, which is why there was no promotion to DImode there.  However, it would be incorrect to revert to the old definition of TRULY_NOOP_TRUNCATION."}}
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